Does The Quality Differ For Pain Medicine? Oxy 543 Vs. Oxy512?

Question

been getting 54-543 tablets oxy 5-325 not as fast acting and long lasting as the mallenkrodt 512 tabs...5-325...is there a difference?

Answer

There can be differences in medications made by different manufacturers. Generic drugs can vary from the brand name original by plus or minus 20%. So if you're comparing two generics, conceivably one could 20% more effective and the other 20% less effective, which would mean that there could actually be a 40% difference between the two generics. This article explains it in more detail: